Initial

resources/app/client/pixi/webgl/shaders/samplers/primary.js

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+/**
+ * The base shader class of {@link PrimarySpriteMesh}.
+ */
+class PrimaryBaseSamplerShader extends OccludableSamplerShader {
+
+  /**
+   * The depth shader class associated with this shader.
+   * @type {typeof DepthSamplerShader}
+   */
+  static depthShaderClass = DepthSamplerShader;
+
+  /* -------------------------------------------- */
+
+  /**
+   * The depth shader associated with this shader.
+   * The depth shader is lazily constructed.
+   * @type {DepthSamplerShader}
+   */
+  get depthShader() {
+    return this.#depthShader ??= this.#createDepthShader();
+  }
+
+  #depthShader;
+
+  /* -------------------------------------------- */
+
+  /**
+   * Create the depth shader and configure it.
+   * @returns {DepthSamplerShader}
+   */
+  #createDepthShader() {
+    const depthShader = this.constructor.depthShaderClass.create();
+    this._configureDepthShader(depthShader);
+    return depthShader;
+  }
+
+  /* -------------------------------------------- */
+
+  /**
+   * One-time configuration that is called when the depth shader is created.
+   * @param {DepthSamplerShader} depthShader    The depth shader
+   * @protected
+   */
+  _configureDepthShader(depthShader) {}
+}
+